Reduce Curve Deformation
I've never had much joy combining two curve modifiers - not even sure what your set is - perhaps curve following path? As curves do essentially modify, they work fine with things like cables and planes, but will distort objects especially around tight corners.

The example below I set up with a Nurbs curve with three Hooks: One to hold the centre form and the other two to animate. There is not much animation just a bit of rotation and placement. If you wanted the scroll to open more, you could just scale it on one axis.

Maybe not the answer you were looking for but think it could be usable...